1/* -*- mode: C; c-file-style: "gnu" -*- */
2/* xdgmimealias.c: Private file.  Datastructure for storing the aliases.
3 *
4 * More info can be found at http://www.freedesktop.org/standards/
5 *
6 * Copyright (C) 2004  Red Hat, Inc.
7 * Copyright (C) 2004  Matthias Clasen <mclasen@redhat.com>
8 *
9 * Licensed under the Academic Free License version 2.0
10 * Or under the following terms:
11 *
12 * This library is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2 of the License, or (at your option) any later version.
16 *
17 * This library is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
20 * Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with this library; if not, write to the
24 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 * Boston, MA 02111-1307, USA.
26 */
27
28#ifdef HAVE_CONFIG_H
29#include "config.h"
30#endif
31
32#include "xdgmimealias.h"
33#include "xdgmimeint.h"
34#include <stdlib.h>
35#include <stdio.h>
36#include <assert.h>
37#include <string.h>
38#include <fnmatch.h>
39
40#ifndef	FALSE
41#define	FALSE	(0)
42#endif
43
44#ifndef	TRUE
45#define	TRUE	(!FALSE)
46#endif
47
48typedef struct XdgAlias XdgAlias;
49
50struct XdgAlias
51{
52  char *alias;
53  char *mime_type;
54};
55
56struct XdgAliasList
57{
58  struct XdgAlias *aliases;
59  int n_aliases;
60};
61
62XdgAliasList *
63_xdg_mime_alias_list_new (void)
64{
65  XdgAliasList *list;
66
67  list = malloc (sizeof (XdgAliasList));
68
69  list->aliases = NULL;
70  list->n_aliases = 0;
71
72  return list;
73}
74
75void
76_xdg_mime_alias_list_free (XdgAliasList *list)
77{
78  int i;
79
80  if (list->aliases)
81    {
82      for (i = 0; i < list->n_aliases; i++)
83	{
84	  free (list->aliases[i].alias);
85	  free (list->aliases[i].mime_type);
86	}
87      free (list->aliases);
88    }
89  free (list);
90}
91
92static int
93alias_entry_cmp (const void *v1, const void *v2)
94{
95  return strcmp (((XdgAlias *)v1)->alias, ((XdgAlias *)v2)->alias);
96}
97
98const char  *
99_xdg_mime_alias_list_lookup (XdgAliasList *list,
100			     const char   *alias)
101{
102  XdgAlias *entry;
103  XdgAlias key;
104
105  if (list->n_aliases > 0)
106    {
107      key.alias = (char *)alias;
108      key.mime_type = NULL;
109
110      entry = bsearch (&key, list->aliases, list->n_aliases,
111		       sizeof (XdgAlias), alias_entry_cmp);
112      if (entry)
113        return entry->mime_type;
114    }
115
116  return NULL;
117}
118
119void
120_xdg_mime_alias_read_from_file (XdgAliasList *list,
121				const char   *file_name)
122{
123  FILE *file;
124  char line[255];
125  int alloc;
126
127  file = fopen (file_name, "r");
128
129  if (file == NULL)
130    return;
131
132  /* FIXME: Not UTF-8 safe.  Doesn't work if lines are greater than 255 chars.
133   * Blah */
134  alloc = list->n_aliases + 16;
135  list->aliases = realloc (list->aliases, alloc * sizeof (XdgAlias));
136  while (fgets (line, 255, file) != NULL)
137    {
138      char *sep;
139      if (line[0] == '#')
140	continue;
141
142      sep = strchr (line, ' ');
143      if (sep == NULL)
144	continue;
145      *(sep++) = '\000';
146      sep[strlen (sep) -1] = '\000';
147      if (list->n_aliases == alloc)
148	{
149	  alloc <<= 1;
150	  list->aliases = realloc (list->aliases,
151				   alloc * sizeof (XdgAlias));
152	}
153      list->aliases[list->n_aliases].alias = strdup (line);
154      list->aliases[list->n_aliases].mime_type = strdup (sep);
155      list->n_aliases++;
156    }
157  list->aliases = realloc (list->aliases,
158			   list->n_aliases * sizeof (XdgAlias));
159
160  fclose (file);
161
162  if (list->n_aliases > 1)
163    qsort (list->aliases, list->n_aliases,
164           sizeof (XdgAlias), alias_entry_cmp);
165}
166
167
168void
169_xdg_mime_alias_list_dump (XdgAliasList *list)
170{
171  int i;
172
173  if (list->aliases)
174    {
175      for (i = 0; i < list->n_aliases; i++)
176	{
177	  printf ("%s %s\n",
178		  list->aliases[i].alias,
179		  list->aliases[i].mime_type);
180	}
181    }
182}
183
184
185